Finding the Third Proportional to 356,405.50 and 471,104

Step by Step Solution

1. Step 1: Write the proportion equation
   356,405.50 : 471,104 = 471,104 : x
2. Step 2: Convert to fraction form
   356,405.50/471,104 = 471,104/x
3. Step 3: Cross multiply
   356,405.50x = 471,104 × 471,104
4. Step 4: Simplify right side
   356,405.50x = 221,938,978,816
5. Step 5: Solve for x
   x = 221,938,978,816/356,405.50
6. Step 6: Final answer
   x = 622,714.80